Discovery of Natural Rosin Derivatives Containing Oxime Ester Moieties as Potential Antifungal Agents to Control Tomato Gray Mold Caused by <i>Botrytis cinerea</i>
作者:Yanqing Gao、Renle Xu、Shihao Gu、Kun Chen、Jian Li、Xiaohua He、Shibin Shang、Zhanqian Song、Jie Song
DOI:10.1021/acs.jafc.2c01532
日期:2022.5.11
series of dehydroabietyl oxime ester derivatives were synthesized using rosin as a raw material. Based on the evaluation and screening of in vitro antifungal activities against Botrytis cinerea (B. cinerea), Sclerotinia sclerotiorum, Valsa mali, Rhizoctonia solani, Fusarium oxysporum, and Alternaria alternata, compound 4f exhibited the best antifungal activity against B. cinerea, and its EC50 was 0.798
受天然产物抗病原真菌应用的启发,以松香为原料合成了两个系列的脱氢枞基肟酯衍生物。通过对灰霉病菌、核盘菌、马里瓦尔萨、立枯病菌、尖孢镰刀菌和链格孢菌体外抗真菌活性的评价和筛选,化合物4f对灰霉病菌的抗真菌活性最好,其欧共体50为0.798 mg/L,低于阳性对照品醚菌酯(1.112 mg/L)。体内抗真菌活性结果表明,4f对番茄具有满意的保护和疗效。生理生化研究表明,化合物4f对灰霉病菌的作用机制是改变菌丝体的形态和超微结构,增加细胞膜的通透性,引起细胞核和线粒体功能障碍,从而导致细胞凋亡。此外,定性和定量构效关系研究表明,化合物4f之间的诱导和共轭相互作用与靶受体形成电子转移过程,从而达到抗真菌作用。这些结果表明,衍生自天然产物松香的化合物4f是一种新的潜在的抗灰霉病菌候选物。